I use this page to check the mempool: https://mempool.space/

The page give you an estimated time for your tx id.

Hi guys, any news about who solve p64 and p120 ?

I just want to know the hardware that they use, this only to make calculations about how much will cost solve the p66 and p125.

In a ECDSA process the R value is always equals to the X value of the result of multiply your random nonce K by the generator point.

This is

Publickey = k*G

R = Publickey.X

You can check the full process in: https://cryptobook.nakov.com/digital-signatures/ecdsa-sign-verify-messages

In your examples none of the K values generate those X or R values that your are showing, that's means that you are doing something wrong or your scripts are doing something weird, so any extra calculations with your current ""K"" value will be wrong, maybe you are skipping some steps or maybe you are confused about what you are doing.

But without any extra information we can't help.

Most app wallets set the fee to be accepted in the next 10 minutes this will be harmful for the user, if the network is overloaded some fees can be from 10 to 15 USD.

And if you setup manually that fee to be the minimum it will take some hours for the transaction to be accepted.

I really like bitcoin but most user don't know how it works and also they don't care they want to buy groceries and stuff instantly, and that will be a problem for small business or small transactions to be accepted faster.

Yes it is considered money, to move big amount of balance with a very low Fee per transaction the bitcoin is perfect.